Comparison of web browsers

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The following tables compare general and technical information for a number of web browsers. Please see the individual products' articles for further information.

Contents 1 Web browser history 1.1 Web browsers by year 1.2 Historical web browsers 2 General information 3 Release history 4 Operating system support 5 Browser features 6 Accessibility features 7 Accessibility features (cont.) 8 Acid Scores 8.1 Browsers under development 9 Web technology support 10 Mobile Web technology support 11 Plugins and syndicated content support 12 JavaScript support 13 Protocol support 14 Image format support 15 Internationalization 16 Vulnerabilities 17 See also 18 References 19 External links

[edit] Web browser history

[edit] Web browsers by year

This is a table of personal computer web browsers by year of release of major version, in chronological order, with the approximate number of worldwide Internet users in millions. Note that Internet user data is related to the entire market, not the versions released in that year. The increased growth of the Internet in the 1990s and 2000s means that current browsers with small market shares have more total users than the entire market early on. For example, 90% market share in 1997 would be roughly 60 million users, but by the start of 2007 9% market share would equate to over 90 million users.^[2]

Year	Web Browsers	Internet Users (in millions)[2]
	Pre-browser: HyperCard, Gopher
1991	WorldWideWeb
1992	ViolaWWW, Erwise, MidasWWW, MacWWW
1993	Mosaic, Cello, Lynx 2.0, Arena, AMosaic 1.0
1994	IBM Web Explorer, Netscape Navigator, SlipKnot 1.0, MacWeb, IBrowse, Argo, Minuet
1995	Internet Explorer, Netscape Navigator 2.0, OmniWeb, WebRouser[3], Internet Explorer 2, Grail	16
1996	Arachne 1.0, Internet Explorer 3.0, Netscape Navigator 3.0, Opera 2.0, PowerBrowser 1.5[4], Cyberdog, Amaya 0.9[5], AWeb, Voyager	36
1997	Internet Explorer 4.0, Netscape Navigator 4.0, Netscape Communicator 4.0, Opera 3.0[6], Amaya 1.0[5]	70
1998	Internet Explorer 5.0 Beta 1, iCab, Mozilla	147
1999	Amaya 2.0[5], Mozilla M3, Internet Explorer 5.0	248
2000	Konqueror, Netscape 6, Opera 4[7], Opera 5[8], K-Meleon 0.2, Amaya 3.0[5], Amaya 4.0[5]	361
2001	Internet Explorer 6, Galeon 1.0, Opera 6[9], Amaya 5.0[5]	513
2002	Netscape 7, Mozilla 1.0, Phoenix 0.1, Links 2.0, Amaya 6.0[5], Amaya 7.0[5]	587
2003	Opera 7[10], Safari 1.0, Epiphany 1.0, Amaya 8.0[5]	719
2004	Firefox 1.0, Netscape Browser, OmniWeb 5.0	817
2005	Safari 2.0, Netscape Browser 8.0, Opera 8.[11], Epiphany1.8, Amaya 9.0[5], AOL Explorer1.0, Maxthon 1.0, Shiira 1.0	1018
2006	SeaMonkey 1.0, K-Meleon 1.0, Galeon 2.0, Camino 1.0, Firefox 2.0, Avant 11, iCab 3, Opera 9[12], Internet Explorer 7, Sputnik	1093
2007	Maxthon 2.0, Netscape Navigator 9, NetSurf 1.0, Flock 1.0, Safari 3.0, Conkeror	1262
2008	Konqueror 4, Safari 3.1, Opera 9.5[13], Firefox 3, Amaya 10.0[5], Flock 2, Google Chrome 1, Amaya 11.0[5]	1565
2009	Internet Explorer 8, Google Chrome 2, Safari 4
Beta	Camino 2, Opera 10
Alpha	SeaMonkey 2, Maxthon 3, Google Chrome 3

[edit] Historical web browsers

This table focuses on OS and browsers of the 1990s and turn of the century. The year listed for a version is usually the year of the first official release, with an end year being end of development, project change, or relevant termination. Releases of OS and browser from the early 1990s to before 2001-2002 time frame are the current focus.

Many early browsers can be made to run on later OS (and later browsers on early OS in some cases), however, most of these situations are avoided in the table. Terms are defined below

Browser	Years	MS 2000/XP/Windows Vista(Major Browsers)	98/Me	NT	95	3.1	IBM OS/2	Mac OS X (Intel/PPC)	Mac OS 9	Mac OS 8	System 7 (PPC/68k)	Linux	BSD	Unix (HP-UX, Solaris)	Other
Years (OS)	-	2000/2001	1998	1993	1995	1992	1988	2001	1999	1997	1991	'94(1.0)/'91	1993	(1990s)	-
AWeb	1996-Now	No	No	No	No	No	No	No	No	No	No	No	No	No	AmigaOS MorphOS
Cello	1993-1994	NA	Unknown	Unknown	Unknown	Terminated	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	No
DocZilla	2003-2005	Yes	Yes	Yes	Yes	No	No	No	No	No	No	Yes	No	No	No
IBM Web Explorer	1994	No	No	No	No	Unknown	Terminated (1.1h)	No	No	No	No	No	No	No	No
ICab	1998-Now	No	No	No	No	No	No	Yes (4.25)	Dropped (3.03)	Dropped (2.9.9)	Dropped (2.9.9)	No	No	No	No
Mozilla Firefox (2 and 3)	2005 - Now	Yes	No	Unknown	No	No	No	Yes	Yes	No	No	Included	No	No	Unknown
Internet Explorer 6 (Trident)	2001- 2004	Terminated (6.0 SP2) Included	Dropped (6.0 SP1)	Dropped (6.0 SP1)	No	No	No	No	Dropped	No	No	No	No	No	No
IE 5.0 IE 4.0	1998-2000 1997-1998	Included	Included	Yes	Yes	Yes	No	No	No	No	No	Dropped * (5.01 SP1)	Unknown	Dropped * (5.01 SP1)	No
IE 3.0	1996-1997	Yes	Yes	Yes	Included	Yes	Unknown	No	Yes	Included	Yes	Yes *	Unknown	Yes *	No
IE 2.0 IE 1.0	1995	Yes	Yes	Included (2.0)	Yes	Yes	No	No	Unknown	Unknown	Beta (2.0)	No	No	No	No
IE Mac (IE4, Trident) (IE5, Tasman)	1996-2003	No	No	No	No	No	No	Terminated (5.2.3)	Dropped (5.1.7)	Dropped (5.1.7)	No	No	No	No	No
Konqueror	1996-Now	Yes	No	No	No	No	No	Yes	No	No	No	Yes	Yes	Yes	No
MacWeb	1994-1996	No	No	No	No	No	No	No	No	Unknown	Terminated (2.0)	No	No	No	No
Mosaic	1993-1997	Terminated (3.0)	Unknown	Terminated	Terminated	Terminated	Terminated	No	Terminated (3.0)	Terminated	Terminated	Dropped (2.6)	Dropped (2.6)	Dropped (2.6)	OpenVMS
Mozilla (restarted SeaMonkey)	2002-2006	Terminated (1.7.13)	Terminated (1.7.13)	Terminated (1.7.13)	Terminated (1.7.13)	Dropped	Terminated (1.7.13)	Terminated (1.7.13)	Dropped (1.2.1)	Dropped (1.0.1)	No	Terminated (1.7.13)	Terminated (1.7.13)	Terminated (1.7.13)	OpenVMS
Netscape Navigator 9	2008	Terminated	Terminated	No	No	No	No	Terminated (Mac OS X v10.2)	No	No	No	Terminated (kernel 2.2.14)	No	No	No
Netscape Browser	2004-2007	Terminated	Terminated	Terminated	Terminated	No	No	No	No	No	No	No	No	No	No
Netscape 7 Netscape 6	2000-2004	Terminated (7.2)	Terminated (7.2)	Terminated (7.2)	Terminated (7.2)	No	No	Terminated (7.2)	Dropped (7.02)	Dropped (7.02)	Unknown	Terminated (7.2)	Terminated (7.2)	Terminated (7.2)	No
Netscape Communicator	1997-2002	Terminated (4.8)	Terminated (4.8)	Terminated (4.8)	Terminated	Terminated (4.08)	Terminated	No	Terminated (4.80)	Terminated (4.80)	Terminated (4.08)	Terminated (4.77)	Terminated	Terminated (4.77)	No
Netscape Navigator	1994-1998	Terminated (4.08)	Terminated (4.08)	Terminated	Terminated	Terminated (4.08)	Terminated	No	Terminated (4.08)	Dropped	Dropped 3.0.4	Terminated (4.08)	Terminated (4.08)	Terminated (4.08)	OpenVMS
OmniWeb	1995-Now	No	No	No	No	No	No	Yes	Dropped (4.0)	Dropped	Dropped	No	No	No	NEXTSTEP
Opera	1996-Now	Yes	Yes	Yes	Yes	Dropped (3.62)	Dropped (5.12)	Yes	Dropped (7.54u2)	Dropped (6.03)	Unknown	Yes	Yes	Yes	Yes †
ViolaWWW	1992	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Yes	X11
WorldWideWeb	1991	No	No	No	No	No	No	No	No	No	No	No	No	No	NEXTSTEP OPENSTEP
Browser	Years	MS 2000/XP	98/Me	NT	95	3.1	IBM OS/2	Mac OS X (Intel/PPC)	Mac OS 9	Mac OS 8	System 7 (PPC/68k)	Linux	BSD	Unix (HP-UX, Solaris)	Other

^[14][15]

• ^ Cell phones, Symbian, Wii, Windows Mobile; BeOS (Dropped 3.62), QNX (Dropped 6.01)

[edit] General information

Basic general information about the browsers: creator/company, license/price etc.

Browser	Creator	Cost (USD)	Open Source?	Software license	Current layout engine
Amaya	W3C, INRIA	Free	Yes	W3C	Amaya
AOL Explorer	America Online, Inc	Free	No		Trident
Avant	Avant Force	Free	No		Trident
Camino	The Camino Project	Free	Yes	MPL, MPL/GPL/LGPL tri-license	Gecko
Chromium	Google	Free	Yes	BSD	WebKit
Dillo	Jorge Arellano Cid, Geerken, Rota, et al.	Free	Yes	GPL	Dillo
DocZilla	CiTEC	Free for non-commercial use	Partial	proprietary software	Gecko
ELinks	Baudis, Fonseca, et al.	Free	Yes	GPL	built-in, based on Links
Epiphany	GNOME	Free	Yes	GPL	Gecko, WebKit
Flock	Flock Inc	Free	Yes	GPL (some portions GPL/LGPL/MPL tri-license like Mozilla)	Gecko
Galeon	Marco Pesenti Gritti	Free	Yes	GPL	Gecko
Google Chrome	Google	Free	Yes	Google Chrome EULA	WebKit
GNU IceCat	GNU	Free	Yes	GPL,MPL/LGPL tri-license	Gecko
iCab	Alexander Clauss	Free, $29 (Pro)	No		WebKit (Version 4+), iCab (Version 1-3)
Internet Explorer	Microsoft, Spyglass	Free, (requires a valid Windows license)[16]	No		Trident
Internet Explorer for Mac (Terminated)	Microsoft	Free	No		Tasman
K-Meleon	Dorian, KKO, et al.	Free	Yes	GPL	Gecko
Konqueror	KDE	Free	Yes	GPL	KHTML
Links	Patocka, et al.	Free	Yes	GPL	built-in
Lynx	Montulli, Grobe, Rezac, et al.	Free	Yes	GPL	built-in
Maxthon	Maxthon International Limited	Free	No		Trident, Gecko
Midori	Christian Dywan, et al.	Free	Yes	LGPL	WebKit
Mosaic	Marc Andreessen and Eric Bina, NCSA	Free for non-commercial use	No		built-in
Mozilla	Mozilla Foundation	Free	Yes	MPL, MPL/GPL/LGPL tri-license	Gecko
Mozilla Firefox	Mozilla Foundation	Free	Yes	MPL, MPL/GPL/LGPL tri-license, Mozilla EULA	Gecko
Netscape (v.6-7) †	Netscape Communications Corporation, AOL	Free	No	???, MPL/GPL/LGPL tri-license	Gecko
Netscape Browser (v.8) †	Mercurial Communications for AOL	Free	No	???, MPL, GPL/LGPL tri-license	Gecko, Trident
Netscape Communicator (v.4) †	Netscape Communications	Free	No		Mosaic
Netscape Navigator (v.1-4) †	Netscape Communications	Free	No		Mosaic
Netscape Navigator 9 †	Netscape Communications (division of AOL)	Free	No	???, MPL, GPL/LGPL tri-license	Gecko
NetSurf	The NetSurf Developers	Free	Yes	GPL	NetSurf built-in
OmniWeb	The Omni Group	Free	No	???, LGPL	WebKit (Version 4.5+), OmniWeb (Version 1-4)
Opera	Opera Software	Free	No		Presto
Opera Mobile	Opera Software	$19.00	No		Presto
Safari	Apple Inc.	Free	No	???, LGPL	WebKit
SeaMonkey	SeaMonkey Council	Free	Yes	MPL, MPL/GPL/LGPL tri-license	Gecko
Shiira	Happy Macintosh Developing Team	Free	Yes	BSD	WebKit
Sleipnir	Fenrir Inc.	Free	No		Trident, Gecko
WorldWideWeb (Later renamed Nexus)	Tim Berners-Lee	Free	Yes	Public domain	NeXTSTEP built-in
w3m	Akinori Ito	Free	Yes	MIT License	?
Browser	Creator	Cost (USD)	open source	Software license	Current layout engine

• ^  There are five different products which all carry the name Netscape: Netscape versions 1 to 4, properly called Netscape Navigator, was a browser based on the original Netscape engine. Netscape 4 also was available as an Internet suite, properly called Netscape Communicator. Netscape 6 and 7 was a new Internet suite based on the Gecko engine and the Mozilla Application Suite user interface. Netscape 8, properly called Netscape Browser, was a distinct browser based on Firefox that could use either the Gecko (Firefox) or Trident (Internet Explorer) engine. Netscape resumed use of the Navigator name from Netscape Navigator 9.0 beta 1. See Netscape for more info.

[edit] Release history

A brief overview of the release history.

Browser	First public release		First stable release		Latest stable release version date	Latest testing release version date
	Date	Version	Date	Version
Amaya	November 14, 1996	0.9	November 14, 1996	0.9		11.2-pre4  (2009-06-19; 16 days ago)
AOL Explorer	June, 2005	1.0	July, 2005	1.1	1.5  (2006-05-10; 3 years ago)	none  (n/a)
Avant	August, 2004	?	August, 2004	?	11.7 Build 35  (2009-06-10; 25 days ago)	none  (n/a)
Camino	February 13, 2002	0.1	February 14, 2006	1.0	1.6.8  (2009-6-22; 13 days ago)	2.0b3  (2009-06-04; 31 days ago)
Chromium	June, 2009	?	NA	NA	None	3.0.192 (192.0)  (2009-6-30; 5 days ago)
Dillo	December, 1999	0.0.0	December, 1999	0.0.0	2.1.1  (2009-07-03; 2 days ago)	none  (n/a)
DocZilla	May, 2003	1.0	July, 2005	2.7pre1	1.0  (2003-05-31; 6 years ago)	2.7pre1  (2005-07-08; 3 years ago)
ELinks	December, 2001	?	December, 2001	?	0.11.6  (2009-03-21; 3 months ago)	0.12pre4  (2009-05-31; 35 days ago)
Epiphany	December 22, 2002	0.4	September 8, 2003	1.0	2.26.1  (2009-03-15; 3 months ago)	2.27.2  (n/a)
Flock	October 24, 2005	0.4.9	November 2, 2007	1.0	2.5  (2009-05-19; 47 days ago)	none  (n/a)
Galeon	June, 2000	0.6	June, 2000	0.6	2.0.7  (2008-09-27; 9 months ago)	none  (n/a)
Google Chrome	September 2, 2008	0.2.149.27	December 11, 2008	1.0.154.36	2.0.172.33  (2009-06-22; 13 days ago)	3.0.190.0(Mac), 3.0.190.4(Windows), 3.0.190.2(Linux dev build)  (2009-6-29; 6 days ago)
iCab	February 17, 1999	Preview 1.0	February 17, 1999	Preview 1.0	4.6  (2009-7-6; 22 hours ago)	none  (n/a)
Internet Explorer	August, 1995	1.0	August, 1995	1.0	8.0  (2009-03-19; 3 months ago) †	none  (n/a)
Internet Explorer for Mac	January 23, 1996	2.0b	April 23, 1996	2.0	5.2.3  (2003-06-16; 6 years ago)	none  (n/a)
K-Meleon	November 26, 2000	0.2	November 26, 2000	0.2	1.5.3  (2009-05-08; 58 days ago)	none  (n/a)
Konqueror	October, 2000	?	October, 2000	?	4.2.4  (2009-6-4; 31 days ago)	4.2.85  (2009-5-13; 53 days ago)
Links	November 24, 1999	0.8	November 24, 1999	0.8	2.2  (2008-07-11; 11 months ago)	none  (n/a)
Lynx	July 8, 1993	2.0.10	July 8, 1993	2.0.10	2.8.6rel.5  (2007-05-09; 2 years ago)	2.8.7pre.5  (2009-06-06; 29 days ago)
Maxthon	July 11, 2002	0.1 (as MyIE2)	September 8, 2005	1.0.0250	2.5.2.7058  (2009-7-02; 3 days ago)	3.0.0.112 alpha 3  (2009-5-21; 45 days ago)
Midori	April 19, 2009	0.1.6	October 19, 2008	0.1.0	0.1.7[17]  (2009-5-29; 37 days ago)	none  (n/a)
Mosaic	April 22, 1993	1.0	April 22, 1993	1.0	3.0  (1997)	none  (n/a)
Mozilla	December 7, 1998	"Preview"	March 19, 1999	M3	1.7.13  (2006-04-21; 3 years ago)	none  (n/a)
Mozilla Firefox	September 23, 2002	0.1	November 9, 2004	1.0	3.5  (2009-06-30; 5 days ago)	none  (n/a)
Netscape	April 5, 2000	6 Preview Release 1	November 14, 2000	6.0	7.2  (2004-08-17; 4 years ago)	none  (n/a)
Netscape Browser	November 30, 2004	0.5.6+	May 19, 2005	8.0	8.1.3  (2007-04-02; 2 years ago)	none  (n/a)
Netscape Communicator	June, 1997	4.0	June, 1997	4.0	4.8  (2002-08-22; 6 years ago)	none  (n/a)
Netscape Navigator	October 13, 1994	0.9	October 13, 1994	0.9	4.08  (1998-11-09; 10 years ago)	none  (n/a)
Netscape Navigator 9	June 5, 2007	9.0 Beta 1	October 15, 2007	9.0	9.0.0.6  (2008-02-20; 16 months ago)	none  (n/a)
NetSurf	June, 2002	0.00	May 19, 2007	1.0	2.1  (2009-05-23; 43 days ago)	Public Autobuilder  (n/a)
OmniWeb	1994	0.5	March 17, 1995	1.0	5.9.2  (2009-03-31; 3 months ago)	none  (n/a)
Opera	September, 1996	2.1b1	December, 1996	2.1	9.64  (2009-03-02; 4 months ago)	10.00 Beta:[18] Build 1622 (Windows) Build 6540 (Mac OS X) Build 4464 (Linux, FreeBSD)  (2009-07-03; 2 days ago)
Safari	January 7, 2003	0.8	June 23, 2003	1.0	4.0.1  (2009-6-17; 18 days ago)†
SeaMonkey	September 15, 2005	1.0a	January 30, 2006	1.0	1.1.17  (2009-06-22; 13 days ago)	2.0a3  (2009-03-04; 3 months ago)
Shiira	May 28, 2004	0.9	May 28, 2004	0.9	2.2  (2007-07-16; 23 months ago)	none  (n/a)
Sleipnir	June, 2005	2.00 alpha	Oct, 2005	2.00	2.8.3  (2008-11-10; 7 months ago)	none  (n/a)
WorldWideWeb	December, 1990	?	February 26, 1991	?	0.18  (1994 ?)	none  (n/a)
w3m	1995	?	?	?	0.5.2  (May 31, 2007)	none  (n/a)
Browser	Date	Version	Date	Version	Latest stable release version date	Latest testing release version date
	First public release		First stable release

• ^  As of February 2007, at least Windows XP SP2 or Windows Server 2003 SP2 is required to install the latest version (8.0) of Internet Explorer for Windows. Internet Explorer 6.0 SP1 is the last version that supports Windows 98, Windows Me, Windows NT 4.0 SP6a, and Windows 2000. Internet Explorer 7 is bundled with Windows Vista and Windows Server 2008, Internet Explorer 8 will be part of Windows 7.
• ^  Safari is included with Mac OS X and the latest version is always available only from the OS install or OS updates.

[edit] Operating system support

The operating systems the browsers have been compiled to run on without emulation; for the given browser/OS combination, there are seven possibilities:

• No indicates that it does not exist or was never released.
• Partial indicates that while the browser works, it lacks important functionality or is extremely unstable compared to versions for other OSs (that is to say it has roughly alpha or pre-alpha quality). It is still being developed however.
• Beta indicates that while a version of the browser is fully functional and has been released, it is still in development (e.g. for stability).
• Yes indicates that the browser has been officially released in a fully functional, stable version.
• Dropped indicates that the latest stable version of the browser does not work on the operating system, although an older version is available that does. The number in parentheses is the last known stable version which was officially released for that OS.
• Included indicates that the browser comes pre-packaged as part of or has been integrated into the operating system.

Please note that the list is not exhaustive, but rather reflects the most common OSs today (e.g. Netscape Navigator was also developed for OS/2 at a time when Mac OS X did not yet exist) but does not include the growing appliance segment (for example, the Opera web browser has gained a leading role for use in mobile phones, smartphones, the Nintendo DS and Wii, and Personal Digital Assistants, and is also used in Interactive televisions). Both the web browser and OS means most recent version, example: Windows Vista w/ Internet Explorer 8.

Browser	Windows	Mac OS X	Linux	BSD	Other Unices
Amaya	Yes	Yes	Yes	Yes	Yes
AOL Explorer	Yes	No	No	No	No
Avant	Yes	No	No	No	No
Camino	No	Yes	No	No	No
Dillo	Partial	Yes	Yes†	Yes	Yes
DocZilla	Yes	No	Yes	No	No
ELinks	Yes	Yes	Yes	Yes	Yes
Epiphany	No	Yes	Yes	Yes	Yes
Flock	Yes	Yes	Yes	Yes	No
Galeon	No	Yes	Yes	Yes	Yes
Google Chrome	Yes	Alpha	Alpha	No	No
iCab	No	Yes	No	No	No
Internet Explorer	Yes	No	No	No	Dropped (5.0)†
K-Meleon	Yes	No	No	No	No
Konqueror	Partial	Yes	Yes	Yes	Yes
Links	Partial	Yes	Yes	Yes	Yes
Lynx	Yes	Yes	Yes	Yes	Yes
Maxthon	Yes	Partial	Partial	No	No
Mozilla Firefox	Yes	Yes	Yes†	Yes	Yes
NetSurf	No	No	Yes	Yes	Yes
OmniWeb	No	Yes	No	No	No
Opera	Yes	Yes	Yes	Yes	Yes
Safari	Yes	Included	No	No	No
SeaMonkey	Yes	Yes	Yes	Yes	Yes
Shiira	No	Yes	No	No	No
Sleipnir	Yes	No	No	No	No
WorldWideWeb (NEXTSTEP only)	No	No	No	No	No
w3m	Yes	Yes	Yes	Yes	Yes
Browser	Windows	Mac OS X	Linux	BSD	Other Unices

• ^ Some version of Firefox is included in most Linux distributions utilizing GUI.
• ^ Dillo is included in some Linux distributions, i.e. Damn Small Linux and Feather Linux.
• ^ Internet Explorer for UNIX was available for Solaris and HP-UX.

[edit] Browser features

Information about what common browser features are implemented natively (without third-party add-ons).

Browser	Bookmark managing	Download managing	Password managing †	Form managing	Spell checking	Search engine toolbar	Per-site security configuration	Privacy mode	Auto-updater
Amaya	No	No	Yes	No	Yes	No	?	?	?
AOL Explorer	Yes	No	No	Yes	No	Yes	?	?	?
Avant	Yes	No	Yes	Yes	No †	Yes	?	?	?
Camino	Yes	Yes	Yes	Yes	Yes	Yes	?	?	Yes
Dillo	Partial	No	No	No	No	Partial	?	?	No
DocZilla	Yes	Yes	Partial	No	No	No	Partial	No	No
ELinks	Yes	Yes	Yes	?	No	No	?	?	?
Epiphany	Yes	Yes	Yes	No	Yes	Yes	?	?	Yes
Flock	Yes	Yes	Yes	Yes	Yes	Yes	Partial †	?	Yes
Galeon	Yes	Yes	Yes	No	No	Yes	?	?	Yes
Google Chrome	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	Yes
iCab	Yes	Yes	Yes	Yes	No	Yes	?	?	?
Internet Explorer	Yes	No	Yes	Yes	No †	Yes	Partial †	Yes †	Yes
Internet Explorer for Mac	Yes	Yes	Yes	Yes	Yes	Yes	?	?	?
K-Meleon	Yes	No	Yes	Yes	No	Yes	?	?	?
Konqueror	Yes	Yes †	Yes	Yes	Yes	Yes	?	?	?
Links	Yes	Yes	No	No	No	No	?	?	?
Lynx	Yes	No	No	No	No †	No	?	?	?
Maxthon	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes
Mosaic	Yes	No	No	No	No	No	?	?	?
Mozilla	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes
Mozilla Firefox	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Netscape	Yes	Yes	Yes	Yes	Yes	Yes	?	No	?
Netscape Browser	Yes	Yes	Yes	Yes	?	Yes	?	No	Yes
Netscape Navigator	Yes	No	No	No	No	No	?	No	?
Netscape Navigator 9	Yes	Yes	Yes	Yes	Yes	Yes	?	No	Yes
NetSurf	Yes	Yes	No	No	No	No	No	No	No
OmniWeb	Yes	Yes	Yes	Yes	Yes	Yes	Partial †	?	Yes
Opera	Yes	Yes	Yes	Yes †	Yes	Yes	Yes	No	Notification only †
Safari	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
SeaMonkey	Yes	Yes	Yes	Yes	Yes	Yes	Partial †	?	Yes
Shiira	Yes	Yes	Yes	Yes	Yes	Yes	?	?	?
Sleipnir	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Notification only
WorldWideWeb	Yes	No	No	No	Yes	No	?	?	?
w3m	Yes	No	No	No	No	No	?	?	?
Browser	Bookmark managing	Download managing	Password managing †	Form managing	Spell checking	Search engine toolbar	Per-site security configuration	Privacy mode	Auto-updater

• ^  Spell checking can be added by installing an add-on like ieSpell.
• ^  Lynx is able to edit text with an external editor, which can provide spell checking.
• ^  Internet Explorer can handle per-site settings for cookies. Furthermore you can specify "trusted" and "untrusted" sites and assign pre-set rights to both categories.
• ^  Internet Explorer 8 supports InPrivate Browsing.
• ^  Mozilla based browsers like Firefox, SeaMonkey and Flock can handle per-site settings for cookies, pop-ups, add-on installs and images. For more settings, an add-on is needed — for example, NoScript.
• ^  OmniWeb supports per-domain settings of options including support for disabling scripting, ad-blocking, java and cookies. These settings only work on top level domains.^[19]
• ^  For the download manager kdenetwork needs to be installed.
• ^  On Linux and Windows, Spell checking requires GNU Aspell to be installed.
• ^  Opera can auto-complete forms with your personal information and website usernames.
• ^  Automatic updates are available in Opera 10.00 alpha (4102).
• ^  In many integrated password saving tools there are often leaks that make them unsafe.^[20]
• ^  Firefox 3.5 adds the Privacy mode. Older versions of Firefox can use the Stealther extension.

[edit] Accessibility features

Information about what common accessibility features are implemented natively (without third-party add-ons). Browsers that haven't any ECMAScript support don't need any Pop-up blocking abilities, so that fields are marked as N/A.

Browser	Tabbed browsing	Pop-up blocking †	Incremental finding	Ad filtering	Page zooming †	Full-text history search
Amaya	Yes	N/A	No	No	Yes	No
AOL Explorer	Yes	Yes	No	No	Yes	No
Avant	Yes	Yes	No	Yes	Yes	No
Camino	Yes	Yes	Yes	Yes	Yes	No
Dillo	Yes	N/A	No	No	No	No
DocZilla	Yes	Partial	Yes	No	Partial	Partial
ELinks	Yes	N/A	Yes	N/A	N/A	No
Epiphany	Yes	Yes	Yes	No †	No	No
Flock	Yes	Yes	Yes	Yes	No	No
Galeon	Yes	Yes	Yes	Yes	Yes	No
Google Chrome	Yes	Yes	Yes	No	Yes	Yes
iCab	Yes	Yes	No	Yes	Yes	No
Internet Explorer	Yes †	Yes †	Yes † †	Partial	Yes	Yes † [21]
Internet Explorer for Mac	No	No	No	No	No	No
K-Meleon	Yes	Yes	Yes	No †	Partial	No
Konqueror	Yes	Yes	Yes	Yes	Yes	No
Links	No	Yes	No	Yes	No	No
Lynx	No	N/A	No	N/A	N/A	No
Maxthon	Yes	Yes	Yes	Yes	Yes	No
Mosaic	No	N/A	No	No	No	No
Mozilla	Yes	Yes	Yes	Yes	Yes	No
Mozilla Firefox	Yes	Yes	Yes	No †	Yes	No [1]
Netscape	Yes	Yes	Yes	No †	No	No
Netscape Browser	Yes	Yes	Yes	No †	No	No
Netscape Navigator	No	No	No	No	No	No
Netscape Navigator 9	Yes	Yes	Yes	No †	No	No
NetSurf	Yes	Yes	Yes	Yes	Yes	No
OmniWeb	Yes	Yes	No	Yes	Yes	No
Opera	Yes	Yes	Yes	Yes †	Yes	Yes
Safari	Yes	Yes †	Yes	No †	Yes †	Yes (only Mac) †
SeaMonkey	Yes	Yes	Yes	No †	No [2]	No
Shiira	Yes	Yes	No	No	Yes	No
Sleipnir	Yes	Yes	Yes	Yes	Yes	No
WorldWideWeb	No	N/A	No	No	No	No
w3m	Yes[dubious – discuss]	Yes	Yes	No	No	No
Browser	Tabbed browsing	Pop-up blocking †	Incremental finding	Ad filtering	Page zooming †	Full-text history search

• ^  A more complete list of Pop-Up blockers and addons / programs are in the following article List of pop-up blocking software.
• ^  Page zooming is different from text resizing, as it resizes not only characters, but also multimedia objects and web page layout
• ^  Epiphany supports AdBlock as an official extension, in the epiphany-extensions package.
• ^  Opera 9 introduced a content blocker for webpages. [3]. Earlier releases support wildcard protocol/domain/path and filetype blocking using a filter.ini [4] file. More advanced Ad filtering for Opera can also be done with external software [5].
• ^  Ad filter support can be added by installing the extension Adblock Plus.
• ^  Does not allow selective blocking of pop-ups. Safari can only block all pop-ups, or none.
• ^  Ad filter support can be added by installing extensions [6]
• ^  IE6 had no tabbed browsing support.
• ^  IE6 included pop-up blocking with Windows XP Service Pack 2 [7]
• ^  Page zooming supported in the iPhone version of Safari. Screen zooming is built in to Mac OS X.
• ^  For IE7, several extensions are available through the Windows Marketplace [8]^{[dead link]}, including "Inline Search for Internet Explorer"[9]^{[dead link]}. This function is included in IE8 [10].
• ^  IE8 supports incremental find.
• ^  Full-text history search is available through Spotlight, a feature of the Mac OS X operating system.
• ^  Full-text history search is available through a Windows Search iFilter ^[21]

[edit] Accessibility features (cont.)

Information about what common accessibility features are implemented natively (without third-party add-ons).

Browser	Access keys	Tabbing navigation	Spatial navigation	Caret navigation	Mouse gesture	Text-to-speech	Voice control
Amaya	Yes	Yes	?	Yes	No	No	No
AOL Explorer	Yes	Yes	No	No	No	No	No
Avant	Yes	Yes	No	No	Yes	No	No
Camino	Yes	Yes	No	Yes	No †	No †	No
Dillo	Yes	No	No	No	No	No	No
DocZilla	?	Yes	No	No	No	No	No
ELinks	Yes	Yes	No	Yes	No	No	No
Epiphany	Yes	Yes	No	Yes	No †	No	No
Flock	Yes	Yes	No	Yes	No †	No	No
Galeon	?	Yes	?	Disabled	Yes	No	No
Google Chrome	Yes	Yes	Yes	No	No	?	?
iCab	Yes	No	No	No	No	No †	No
Internet Explorer	Yes	Yes	No	Yes †	No †	Partial †	Yes †
Internet Explorer for Mac	Yes	Yes	No	No	No	No	No
K-Meleon	Yes	Yes	No	Disabled	Yes	No	No
Konqueror	Yes	Yes	Yes	Yes	No †	No †	No
Links	No	No	No	Yes	No	No	No
Lynx	?	No	No	?	No	No	No
Maxthon	Yes	Yes	Yes	Yes	Yes	No	No
Mosaic	No	No	No	No	No	No	No
Mozilla	Yes	Yes	Yes	Yes	No †	No †	Yes
Mozilla Firefox	Yes	Yes	No †	Yes	No †	No †	Yes
Netscape	Yes	Yes	No	Yes	No	No	No
Netscape Browser	Yes	Yes	No	Yes	No	No	No
Netscape Navigator	?	?	No	No	No	No	No
Netscape Navigator 9	Yes	Yes	No	Yes	No	No	No
NetSurf	No	Yes	No	No	No	No	No
OmniWeb	Yes	Yes	No	No	No †	Yes	Yes
Opera	Yes	Yes	Yes	No	Yes	Yes	Yes
Safari	Yes	Yes	Yes	No	No †	No †	No
SeaMonkey	Yes	Yes	No	Yes	No	No	No
Shiira	?	Yes	Yes	Yes	No	Yes	No
Sleipnir	Yes	Yes	No	No	Yes	No	No
WorldWideWeb	?	?	?	?	?	No	No
w3m	?	Yes	Yes	Yes	No	No	No
Browser	Access keys	Tabbing navigation	Spatial navigation	Caret navigation	Mouse gesture	Text-to-speech	Voice control

• ^  On Mac OS X systems mouse gesture support can be added by installing extensions like CocoaGestures (works with Cocoa applications)
• ^  On Mac OS X systems Text-to speech is available system-wide and is available from menu in web browsers.
• ^  Epiphany supports mouse gestures as an official extension, in the epiphany-extensions package.
• ^  Mouse gesture support is available system-wide in KDE
• ^  Text-to speech support depends on the kttsd application in the kdeaccessibility package
• ^  Mouse gesture support can be added by installing Easy Go Back add-on [11] or similar applications.
• ^  Doug Turner, the Minimo lead developer, has introduced spatial navigation to some special Firefox builds [12]. It may build as a default part of Firefox [13].
• ^  Mouse gesture support can be added by installing extensions like All-in-One Gestures (Firefox-only) [14] and Mouse Gestures [15].
• ^  Firefox works with a number of screen readers such as JAWS [16]^{[dead link]} and Microsoft SAPI 5 TTS [17]^{[dead link]} through extensions.
• ^  Internet Explorer 8 supports caret browsing.
• ^  Internet Explorer does not have built-in Text to speech/read aloud functions, however it can work with third-party screen readers.
• ^  Internet Explorer can be controlled by applications which use the operating system Speech API. A built-in application called Windows Speech Recognition ships with Windows Vista and later client versions.

[edit] Acid Scores

The Acid tests are standard tests to rate the performance of a browser. Upon each test's release, they are designed so that no existing browser can pass without further development. In order for a browser to pass any Acid test, the latest public release of the browser (not an alpha, beta, release candidate, or other version under development or testing procedures) must meet the requirements shown below. In addition, the browser should be tested upon completion of installation, with no add-ons installed (some browsers make this easy by providing a "safe mode" option) and all the factory settings (no options have been changed from their defaults).

Acid1:

• Final rendering looks exactly like the rendering provided by the Acid tests website.
• Text can be highlighted and radio buttons can be selected.

Acid2:

• Final rendering looks exactly like the rendering provided by the Acid tests website.
• Smiley's nose turns blue when hovered over.

Acid3:

• Final score of 100/100.
• No error messages on final rendering.
• Render-in-progress loads smoothly (no pausing).
• Final rendering looks exactly like the rendering provided by the Acid tests website.

Browser	Acid1	Acid2	Acid3
Amaya	?	No	No
AOL Explorer	?	No	?
Avant	?	No	No
Camino	Yes	No	?
Dillo	?	No	?
DocZilla	?	No	?
ELinks	?	No	?
Epiphany	Yes	Yes	71/100
Flock	Yes	Yes	71/100
Galeon	?	?	?
Google Chrome	Yes	Yes	100/100
iCab	?	Yes	Yes
Internet Explorer	Yes	Yes	20/100
Internet Explorer for Mac	?	No	?
K-Meleon	?	No	?
Konqueror	Yes	Yes	87/100
Links	?	No	No
Lynx	?	No	No
Maxthon	Yes	Yes	20/100
Mosaic	?	No	No
Mozilla	Yes	No	?
Mozilla Firefox	Yes	Yes	93/100
Netscape	?	No	?
Netscape Browser	Yes	No	?
Netscape Navigator	?	No	?
Netscape Navigator 9	Yes	No	52/100
NetSurf	?	No	?
OmniWeb	?	Yes	?
Opera	Yes	Yes	85/100
Safari	Yes	Yes	Yes†
SeaMonkey	Yes	No	53/100
Shiira	?	Yes	74/100
Sleipnir	?	?	?
WorldWideWeb	No	No	No
w3m	No	No	No
Browser	Acid1	Acid2	Acid3

• ^  Mobile Safari reaches 97/100.

[edit] Browsers under development

Browser	Acid1	Acid2	Acid3
Midori 0.1.6	Yes	Yes	Yes †
Mozilla Firefox 3.6	Yes	Yes	94/100
Opera 10	Yes	Yes	100/100
Browser	Acid1	Acid2	Acid3

• ^  Midori passes Acid3 because it uses WebKit snapshots which pass Acid3.

[edit] Web technology support

Information about what web standards, and technologies the browsers support, except for JavaScript. External links lead to information about support in future versions of the browsers or extensions that provide such functionality.

Browser	CSS2.1 †	Frames	Nav LINKs †	XSLT	XHTML 1.0 †	XHTML 1.1 †	MathML	XForms	Web Forms 2.0	VoiceXML/X+V	CSS Presentation/projection mode†
Amaya	Yes	No	?	No	Yes	Yes	Yes	No	No	No	?
AOL Explorer	Partial	Yes	No	Yes	No	No	No †	No	No	No	?
Avant	Partial	Yes	?	Yes	No	No	No	No	No	No	?
Camino	Yes	Yes	No	Yes	Yes	Yes	Yes	No	No	No	?
Dillo	Partial	Partial †	No	No	No	No	No	No	No	No	?
DocZilla	Partial	Yes	Yes	Yes	Yes	Yes	Yes	?	No	No	?
ELinks	Partial	Yes	?	No	No	No	No	No	No	No	?
Epiphany	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No †	No	?
Flock	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	No	No	No
Galeon	Yes	Yes	?	Yes	Yes	Yes	Yes	No	No	No	?
Google Chrome	Yes	Yes	No	Yes	Yes	Yes	No	No	No	No	?
iCab	Yes	Yes	Yes	No	No	No	No	No	No	No	?
Internet Explorer	Yes † [22]	Yes	No †	Yes	No	No	No †	No †	No †	No	?
Internet Explorer for Mac	Partial	Yes	?	Partial	No	Yes	No	No	No	No	?
K-Meleon	Yes	Yes	?	Yes	Yes	Yes	No	No	No	No	?
Konqueror	Yes	Yes	Yes	No	Yes	Yes	No	No	No	No	?
Links	No	Yes	Yes	No	No	No	No	No	No	No	?
Lynx	No	Partial	Yes	No	No	No	No	No	No	No	?
Maxthon	Partial	Yes	?	Yes	No	No	No	No	No	No	?
Mosaic	No	No	?	No	No	No	No	No	No	No	No
Mozilla	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	?
Mozilla Firefox	Yes	Yes	No †	Yes	Yes	Yes	Yes	Yes	No †	No	No†
Netscape	Yes	Yes	?	Yes	Yes	Yes	Yes	No	No	No	?
Netscape Browser	Depends [23]	Yes	?	Yes	Depends [23]	Depends [23]	Depends [23]	No	No	No	?
Netscape Navigator	No	Yes	No	No	No	No	No	No	No	No	?
Netscape Navigator 9	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	No	?
NetSurf	Yes	Yes	No	No	No	No	No	No	No	No	?
OmniWeb	Yes	Yes	?	No	Yes	Yes	No	No	No	No	?
Opera	Yes	Yes	Yes	Yes	Yes	Yes	Yes †	No	Yes	Yes	Yes†
Safari	Yes	Yes	No	Yes	Yes	Yes	No	No	No	No	No†
SeaMonkey	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No	?
Shiira	Yes	Yes	?	Yes	Yes	Yes	No	No	No	No	?
Sleipnir	Partial	Yes	No †	Yes	No	No	No †	No	No †	No	?
WorldWideWeb	No	No	?	No	No	No	No	No	No	No	?
w3m	?	Yes	?	No	Yes	?	No	?	No	No	?
Browser	CSS2.1 †	Frames	Nav LINKs †	XSLT	XHTML 1.0 †	XHTML 1.1 †	MathML	XForms	Web Forms 2.0	VoiceXML/X+V	CSS Presentation/projection mode†

• ^  CSS 2, a W3C recommendation since 1998, is the current stable version of CSS, nevertheless, CSS 2.1 corrects a few errors in CSS2 (the most important being a new definition of the height/width of absolutely positioned elements, more influence for HTML's "style" attribute and a new calculation of the 'clip' property), and adds a few highly requested features which have already been widely implemented. CSS 2.1 is derived from and is intended to replace CSS 2. Conformance criteria are detailed at at the W3C website. (CSS 3 is only in draft status at present.) For more detailed information please see comparison of layout engines (CSS).
• ^  LINK as a navigational aid, as distinct from non-navigational uses of LINK.
• ^  Not in standard install, but provided by extension.[18][19]
• ^  XHTML is based on HTML but is an application of XML, which means that XHTML must be stricter than equivalent HTML code. XHTML is meant to be read by an XML parser but for backward compatibility reasons can also be parsed as HTML; this table only notes the browsers that are able to parse XHTML as XML. For more detailed information please see comparison of layout engines (XHTML).
• ^  Dillo displays frames as links that the user can click on.
• ^  Available with the MathPlayer plugin.
• ^  Available with the FormsPlayer plugin and several other plugins.
• ^  XForms is supported experimentally in nightly builds dated after January 28, 2005 [20]. Requires installation of an extension.
• ^  It is possible to use CSS to partially style MathML in Opera (see here for more^{[dead link]}). Since Opera 9.0 Technical Preview 2 (Opera 9TP2) it is also possible to use a user javascript method to support MathML (see here).
• ^  Web Forms 2.0 can be emulated in IE using DHTML behaviours, available from SourceForge.
• ^  Web Forms 2.0 functionality is currently being added to Gecko, there should be at least partial support for Gecko 1.9 (Firefox 3.0). See bug #344614.
• ^  XHTML1.1 includes RUBY (see [21]) which is not supported. There exists add-on for adding RUBY support. [22]
• ^  Presentation mode is the ability to read styles targeted to the CSS projection media type.
• ^  S5 is a CSS/Javascript alternative for browsers that don't support a presentation mode.
• ^  Opera switches to presentation mode on full screen. [23]
• ^  Internet Explorer 8 has full CSS2.1 support.^[22]

[edit] Mobile Web technology support

Information about what web standards, and technologies the browsers support, except for JavaScript. External links lead to information about support in future versions of the browsers or extensions that provide such functionality.

Browser	C-HTML	HDML	I-mode	XHTML Mobile Profile	WML
Amaya	?	?	?	?	No
AOL Explorer	?	?	?	?	No
Avant	?	?	?	?	No
Camino	?	?	?	?	No
Dillo	?	?	?	?	No
DocZilla	?	?	?	?	No
ELinks	?	?	?	?	?
Epiphany	?	?	?	?	No
Flock	Partial †	No	No	Partial †	No †
Galeon	?	?	?	?	No
Google Chrome	?	?	?	?	No
iCab	?	?	?	?	No
Internet Explorer	?	?	?	No †	No †
Internet Explorer for Mac	?	?	?	?	No
Internet Explorer Mobile	?	?	?	Yes †	Yes
K-Meleon	Partial †	No	No	Partial †	No
Konqueror	?	?	?	?	No
Links	?	?	?	?	No
Lynx	?	?	?	?	No
Maxthon	?	?	?	?	No
Microsoft Mobile Explorer	Yes †	?	Yes †	Yes †	Yes †
Mosaic	?	?	?	?	No
Mozilla	Partial †	No	No	Partial †	No †
Mozilla Firefox	Partial †	No	No	Partial †	No †
Netscape	?	No	No	?	No
Netscape Browser	?	No	No	?	No
Netscape Navigator	?	No	No	?	No
Netscape Navigator 9	?	No	No	?	No
NetSurf	?	?	?	?	No
OmniWeb	?	?	?	?	No
Opera	Yes	No	Yes	Yes	Yes
Safari	?	?	?	?	No
SeaMonkey	Partial †	No	No	Partial †	No †
Shiira	?	?	?	?	No
Sleipnir	?	?	?	?	No
WorldWideWeb	?	?	?	?	?
w3m	?	?	?	?	No
Browser	C-HTML	HDML	I-mode	XHTML Mobile Profile	WML

• ^  Gecko-based browsers render C-HTML and XHTML Mobile Profile as an ordinary XHTML. In most cases this is quite enough to browse mobile Web.
• ^  Gecko-based browsers don't support WML natively, this issue is being discussed at bug 35995. There is an extension called wmlbrowser [24], [25] which adds a partial WML support to Firefox, SeaMonkey, Mozilla Suite and Flock (without card navigation and WMLScript). In most cases this is quite enough to browse mobile Web.
• ^  Internet Explorer Mobile 6 supports XHTML Mobile Profile.
• ^  Microsoft Mobile Explorer was discontinued in 2002.^[24]

[edit] Plugins and syndicated content support

Information about what web standards, and technologies the browsers support. External links lead to information about support in future versions of the browsers or extensions that provide such functionality. Java support is for built-in support by the browser without the plugin from SUN.

Browser	ActiveX †	NPAPI †	Java	Gears	RSS	Atom	other web feed
Amaya	No	?	?	No	No	No	?
AOL Explorer	Yes	No	?	No	Yes †	Yes †	?
Avant	Yes	No	?	?	Yes †	Yes †	?
Camino	No	Yes	?	?	Partial	Partial	?
DocZilla	No	Yes	?	No	?	?	?
Dillo	No	?	?	No	No	No	?
ELinks	No	?	?	?	No	No	?
Epiphany	No	?	?	?	No †	No †	?
Flock	No	Yes	No	Yes	Yes	Yes	?
Galeon	No	Yes	?	Yes	No	No	?
Google Chrome	No	Yes	Yes	Yes	No	No	?
iCab	No	Yes	?	?	Yes	No	?
Internet Explorer	Yes	No †	Yes	Yes	Yes †	Yes †	Yes †
Internet Explorer for Mac	No	Yes	?	No	No	No	No
K-Meleon	No	?	?	?	Yes	Yes	?
Konqueror	No	Yes	Yes †	No	Yes †	Yes †	?
Links	No	?	?	No	No	No	?
Lynx	No	?	?	No	No	No	No
Maxthon	Yes	No	?	?	Yes	Yes	?
Mosaic	No	No	?	No	No	No	No
Mozilla	No	Yes	No	No	No	No	?
Mozilla Firefox	No	Yes	No	Yes	Yes	Yes	?
Netscape	No	Yes	No	No	No	No	?
Netscape Browser	No	Yes	No	No	Yes	Yes	?
Netscape Navigator	No	Yes	No	No	No	No	?
Netscape Navigator 9	No	Yes	No	No	Yes	Yes	?
NetSurf	No	No	No	No	No	No	No
OmniWeb	No	?	?	?	Yes	Yes	?
Opera	No	Yes	Yes	No	Yes	Yes	No
Safari	No	Yes	Yes†	Partial†	Yes	Yes	?
SeaMonkey	No	Yes	?	Yes	No	No	?
Shiira	No	?	?	?	Yes	Yes	?
Sleipnir	Yes	?	?	Yes	Yes †	Yes †	?
WorldWideWeb	No	No	?	No	No	No	No
w3m	No	No	?	No	No	No	?
Browser	ActiveX †	NPAPI †	Java	Gears	RSS	Atom	other web feed

• ^  Internet Explorer (and Shells) is the only browser to natively support the Component Object Model (popularly known as ActiveX). Most other browsers use the NPAPI plugin architecture. ActiveX is more powerful than NPAPI in terms of the control it affords over the browser, but it is specific to Windows whereas NPAPI is cross-platform. There is a third-party plugin that adds partial ActiveX support, that is available for certain older versions of Mozilla Suite, Mozilla Firefox and Netscape Navigator. The default settings in earlier versions of Internet Explorer allowed the automatic download, installation, and running of new ActiveX controls with minimal user intervention — this made it possible to use ActiveX on web pages to install viruses, spyware, etc. onto a user's computer.
• ^  Internet Explorer 7 and later
• ^  Konqueror needs an external Java interpreter (usually the 'java' executable of a JRE/JDK).
• ^  RSS and ATOM feed autodetection in Konqueror depends on the aKregator package which is installed with kdepim.
• ^  RSS and ATOM feed autodetection in Epiphany depends on the Newsfeed extension which is included with Epiphany-extensions.
• ^  Safari has only on Mac OS X 10.4+ Gears support. At the moment Windows isn't supported
• ^  Safari has only on Mac OS X Java support. At the moment Windows need a plugin.
• ^ Internet Explorer did for a time support NPAPI plugins. Plugins that functioned in the Netscape browser also functioned in Internet Explorer. This was due to a small ActiveX control implemented within a "plugin.ocx" file that acted as a shim between the ActiveX based browser and the NPAPI plugin. The IE browser would load the control and use it to host plugins specified within the page. However, Microsoft made the claim that the NPAPI plugins (or the IE implementation of the API) were a security issue and dropped support for them in version 5.5 SP2.^[25][26][27]
• ^ Internet Explorer 8 supports syndicated content in hAtom / hSlice microformat by the name of a feature known as Web Slices.

[edit] JavaScript support

Information about what JavaScript technologies the browsers support. Note that although XPath is used by XSLT, it is only considered here if it can be accessed using JavaScript. External links lead to information about support in future versions of the browsers or extensions that provide such functionality.

Browser	JavaScript	ECMAScript 3	DOM 1	DOM 2	DOM 3	XPath	DHTML	XMLHttpRequest	Rich editing
Amaya	No †	No †	No †	No	No	No	No	No	No
AOL Explorer	Yes	Yes	Partial	No	No	No	Yes	Yes	Yes
Avant	Yes	Yes	Partial	No	No	No	Yes	Yes	Yes
Camino	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Dillo	No	No	No	No	No	No	No	No	No
DocZilla	Yes	No	Yes	Yes	Partial	Yes	Yes	Yes	No
ELinks	Partial	Partial	No	No	No	No	No	No	No
Epiphany	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Flock	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Galeon	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Google Chrome	Yes	Yes	Yes	Yes	?	?	Yes	Yes	Yes
iCab	Yes	Yes	Partial	Partial	No	No	Yes	Yes	No
Internet Explorer	Yes	Yes	Partial	No †	No	Yes	Yes	Yes	Yes
Internet Explorer for Mac	Yes	Yes	Partial	No	No	No	Yes	No	No
K-Meleon	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Konqueror	Yes	Yes	Yes	Yes	Partial	No	Yes	Yes	No
Links	Partial	No	No	No	No	No	No	No	No
Lynx	No	No	No	No	No	No	No	No	No
Maxthon	Yes	Yes	Partial	No	No	Yes	Yes	Yes	Yes
Mosaic	No	No	No	No	No	No	No	No	No
Mozilla	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Mozilla Firefox	Yes	Yes	Yes	Yes	Partial †	Yes	Yes	Yes	Yes
Netscape	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Netscape Browser	Yes	Yes	Depends [23]	Depends [23]	No †	Depends [23]	Yes	Yes	Yes
Netscape Navigator	Yes	Partial	No	No	No	No	Yes	No	No
Netscape Navigator 9	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
NetSurf	No	No	No	No	No	No	No	No	No
OmniWeb	Yes	Yes	Yes	Yes	No	No	Yes	Yes	No
Opera	Yes	Yes	Yes	Yes	Partial	Yes	Yes	Yes	Yes
Safari	Yes	Yes	Yes	Yes	Partial †	Yes †	Yes	Yes	Yes
SeaMonkey	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes	Yes
Shiira	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Yes
Sleipnir	Yes	Yes	Partial	No †	No	Yes	Yes	Yes	Yes
WorldWideWeb	No	No	No	No	No	No	No	No	No
w3m	No	No	No	No	No	No	No	No	No
Browser	JavaScript	ECMAScript 3	DOM 1	DOM 2	DOM 3	XPath	DHTML	XMLHttpRequest	Rich editing

• ^  Internet Explorer 5 and above has its own event registration model and its own style sheets model, but these are incompatible with DOM 2.
• ^  XPath is a part of DOM 3, but is considered separately here. A large subset of DOM 3 is accessible by extensions but not by websites.
• ^  SVG / XPath / (partial) DOM 3 is only available in the WebKit nightlies so far.
• ^  It is possible to compile Amaya with javascript enabled, using the CVS version and SpiderMonkey. However, this is still experimental and only a small subset of DOM 1 is available.

See what parts of DOM your browser supports.

[edit] Protocol support

Information about what internet protocols the browsers support. External links lead to information about support in future versions of the browsers or extensions that provide such functionality.

Browser	HTTP	E-mail †	FTP †	NNTP (Usenet) †	SSL	EV	IRC	Gopher	IDN	data: URL	BitTorrent	IPv6	Proxy possibilities
Amaya	Yes	No	No	No	No	No	No	No	?	No	No	?	?
AOL Explorer	Yes	No	Yes	No	Yes †	Yes	No	No †	No †	No	No	Yes	?
Avant	Yes	No	Yes	No	Yes†	Yes	No	No †	No †	No	No	Yes	?
Camino	Yes	No	Yes	No	Yes	?	No	Yes	Yes	Yes	No	Yes	?
Dillo	Yes	No	Yes	No	No †	No	No	No	No	Yes	No	Yes	?
DocZilla	Yes	No	Yes	No	Yes	?	No	Yes	?	?	No	?	Yes
ELinks	Yes	No	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Yes	Yes	?
Epiphany	Yes	No	Yes	No	Yes	?	No	Yes	Yes	Yes	No	Yes	?
Flock	Yes	No	Yes	No	Yes	?	No †	Yes	Yes	Yes	No	Yes	?
Galeon	Yes	No	Yes	No	Yes	?	No	Yes	Yes	Yes	?	Yes	?
Google Chrome	Yes	No	Yes	?	Yes	Yes	No	No	Yes	Yes	No	?	?
iCab	Yes	No	Yes	No	Yes	?	No	No	Yes	No	No	Yes	?
Internet Explorer	Yes	No	Yes	No	Yes †	Yes	No	No †	Yes †	Partial †	No	Yes	Yes
Internet Explorer for Mac	Partial [dubious – discuss]	No	Yes	No	Partial [dubious – discuss]	No	No	Yes	No	No	No	?	?
K-Meleon	Yes	No	Yes	No	Yes	?	No	Yes	Yes	Yes	No	Yes	?
Konqueror	Yes	No	Yes	No	Yes	?	No	No †	Yes	Yes	Yes	Yes	Yes
Links	Yes	No	Yes	No	Yes	No	No	No	No	No	No	No	?
Lynx	Yes	No	Yes	Yes	Yes	No	No	Yes	?	No	No	Yes	?
Maxthon	Yes	No	Yes	No	Yes †	Yes	No	No †	Yes †	No	No	Yes	Yes
Mosaic	Partial †	No	Yes	Yes	No	No	No	Yes	No	No	No	No	?
Mozilla	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes †	Yes	No	No	Yes
Mozilla Firefox	Yes	No	Yes	No †	Yes	Yes	No †	Yes	Yes †	Yes	No	Yes	Yes
Netscape	Yes	Yes	Yes	Yes	Yes	No	No †	Yes	Yes	Yes	No	?	?
Netscape Browser	Yes	No	Yes	No	Yes	No	No	Depends [23]	Depends [23]	Depends [23]	No	?	?
Netscape Navigator	Yes	Yes	Yes	Yes	Yes	No	No	Yes	No	No	No	?	?
Netscape Navigator 9	Yes	No	Yes	No	Yes	No	No †	Yes	Yes †	Yes	No	Yes	?
NetSurf	Yes	No	Yes	No	Yes	No	No	No	No	Yes	No	Yes	?
OmniWeb	Yes	No	Yes	No	Yes	?	No	Yes[28]	Yes	Yes	No	Yes	?
Opera	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No †	Yes	Yes	Yes[26]	Yes[27]	Yes
Safari	Yes	No	Partial	No	Yes	Yes	No	No	Yes	Yes	No	Yes	?
SeaMonkey	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes †	Yes	No	Yes	Yes
Shiira	Yes	No	?	?	Yes	?	No	No	Yes	?	No	Yes	?
Sleipnir	Yes	No	Yes	No	Yes †	Yes	No	No †	Yes †	No	No	Yes	?
WorldWideWeb	Yes	No	Yes	Yes	No	No	No	No	No	No	No	No	?
w3m	Yes	No	Yes	No	Yes	?	No	Yes	?	?	No	?	?
Browser	HTTP	E-mail †	FTP †	NNTP (Usenet) †	SSL	EV	IRC	Gopher	IDN	data: URL	BitTorrent	IPv6	Proxy possibilities

• ^  Many browsers have purposely avoided support for e-mail, as this is reserved for their mail-client counterparts. For a comparison of such counterparts see Comparison of e-mail clients.
• ^  Many browsers have FTP support as read-only and have no upload capitilies. Read-only is marked as yes. For a comparison of clients that support upload opportunities see Comparison of FTP client software.
• ^  Many browsers have purposely avoided support for e-mail and newsgroups, as these are reserved for their mail-client counterparts. For a comparison of such counterparts see comparison of e-mail clients and Comparison of Usenet newsreaders.
• ^  Support for 256-bit ciphers (AES for example) for SSL/TLS is only available in Windows Vista and above^[29][30]
• ^  Mosaic reached only HTTP 0.9 compliance, and does not support secure communications in any way.
• ^  IRC support can be added by installing ChatZilla.
• ^  Includes a proxy capability for gopher support.
• ^  Internet Explorer 7 and later support IDN, [28]. IE6 IDN support can be added by installing VeriSign i-Nav Plug-In.
• ^  Internet Explorer 7 has no support of gopher; gopher support is disabled in IE6
• ^  For security reasons, IDN domains are displayed as punycode if they contain certain characters or if the top level domain hasn't been whitelisted [29].
• ^  Konqueror has full Gopher support when the kgopher KIO plugin is installed.
• ^  NNTP support can be added by installing the add-on infoRSS.
• ^  Dillo has experimental SSL integration that is by standard turned off.[30] There is no certificate caching and NO